Every person operating any roller skates or skateboard upon a roadway shall ride as near to the right side of the roadway as practicable, exercising due care when passing a standing vehicle or one proceeding in the same direction; provided, however, that any person may move to the left under any of the following situations:
Persons operating any roller skates or skateboards upon a roadway may travel no more than two abreast when traffic is not impeded, but otherwise shall ride in single file, except on paths or parts of roadways set aside for the exclusive use of bicycles, roller skates or skateboards.
N.J.S. § 39:4-10.11